Easy Magnetization Direction Research Articles

Dirac semimetallic Janus Ni-trihalide monolayer with strain-tunable magnetic anisotropy and electronic properties.

Two-dimensional (2D) ferromagnetic (FM) semiconductors have been paid much attention due to the potential applications in spintronics. Here, the electronic and magnetic properties of 2D Janus Ni-trihalide monolayer Ni2X3Y3 (X, Y = I, Br, Cl; X ≠ Y) are investigated by first-principle calculations. The properties of Ni2X3Y3 (X, Y = I, Br, Cl; X ≠ Y) monolayers are compared by selecting the NiCl3 monolayer as the reference material. Ni2X3Y3 monolayers have two distinct magnetic ground states of ferromagnetic (FM) and antiferromagnetic (AFM). In the Ni2X3Y3 monolayer, two different orbital splits were observed, one semiconductor state and the other semimetal state. The semimetal state of Ni2X3Y3 can be tuned to semiconductor or metallic state when biaxial strain is applied. The magnetic anisotropy energy (MAE) of the Ni2X3Y3 monolayer can display variations compared to that of the NiCl3 monolayer, with the direction of easy magnetization being influenced by the specific halogen elements present. The easy magnetization direction of Ni2X3Y3 can also be changed by applying biaxial strain. The Tc of Ni2X3Y3 is predicted to be about 100 K according to the calculation of the EAFM-EFM model. The design of the Janus Ni2X3Y3 structure has expanded the range of 2D magnetic materials, a significant contribution has been made to the advancement of spintronics and its applications.

Controlling the magnetic anisotropy of RumIrn (m + n = 3) clusters using the MgO(001) substrate.

Large perpendicular magnetic anisotropy energy (MAE) and flexible regulation of the magnitude and direction of MAE have great potential for application in information storage devices. Here, utilizing first-principles calculations, we investigated the magnetic properties of free and MgO(001) supported RumIrn clusters (RumIrn@MgO(m + n = 3)). The results indicate that the MAE of mixed clusters increases with the number of Ir atoms due to Ir having a strong coupling between the non-degenerate dxy and dx2-y2 states. The MAE of free Ir3 is -8.18 meV with the easy magnetization direction parallel to the x-axis, while the MAE of supported Ir3 on the MgO substrate increases by a factor of 2.6, and the easy magnetization axis of the structure is shifted to a direction perpendicular to the substrate surface. This change in MAE is due to the significant enhancement in the coupling between the non-degenerate dyz and dx2-y2 states near the Fermi level of Ir3 atoms. Moreover, Ir3@MgO possesses high thermodynamic stability. These results give a new method for manipulating MAE and the direction of easy magnetization, which has great potential for application in magnetic nanodevices.

Characterization of Electrodeposited Cobalt/Copper (Co/Cu) Granular Multilayered Thin Films onto the Anodic Aluminum Oxide (AAO) Substrates

Herein, we report on the characterization of a series of cobalt/copper granular thin films alloys electrodeposited onto the previously pre-treated aluminum substrates, at different deposition time. And a systematic study of their structural and magneto-optical properties were investigated. The proper deposition potentials of Co, and Cu were obtained from the cyclic voltammetry method. It was observed that the easy axis direction of magnetization was parallel to the film plane for all films. The X-ray diffraction (XRD) results revealed that all films had a mixture of hexagonal close-packed (hcp) and face centered cubic (fcc) phases. The Scanning electron microscope images (SEM) and atomic force microscopy (AFM) showed some parallelepiped and ellipsoid shaped rods with an averaged dimension about of 600 nm length, 600 nm width and 200 nm thickness for a sample electrodeposited at room temperature. These rods are irregularly arranged. Their irregular arrangement could explain the large d-spacing in the sample at this temperature. The magnetic analysis of the granular thin films alloys showed the saturation magnetization increased and the coercivity decreased as the deposition time increased. These results showed that the changes in magnetic and structural properties of granular cobalt/copper alloys deposits were substantially depending on the variation of deposition time. Therefore, the change of the deposition time was seen to control the properties of the alloys deposits and hence their properties could be modified for desired purpose.

Tailoring the structural and magnetic properties of self-ordered nickel nanowires created by template-assisted electrodeposition route

Thin films of vertically oriented self-ordered nickel nanowires were fabricated using the template-assisted electrodeposition method. Magnetic measurements of as-formed nanowires revealed the presence of an axial easy magnetization direction due to the shape of the nanowires. At moderate annealing temperatures, the magnetic anisotropy changed from positive to negative. This indicated easy magnetization direction flipping from axial to radial configuration. A nickel oxide phase started to grow at higher annealing temperatures with a distinct reduction in saturation magnetization due to its antiferromagnetic character. In addition, an exchange bias was observed owing to the coexistence of ferromagnetic and antiferromagnetic phases. Single-phase nickel oxide nanowires were generated at elevated annealing temperatures and exhibited an unexpected ferromagnetic behavior attributed to the incorporation of nickel ions and oxygen vacancies as suggested by ferromagnetic resonance measurements. Diffuse reflection measurements indicated an effective energy gap of 4.2 eV for nickel oxide nanowires.

On the anisotropic grain boundary diffusion of sintered Nd-Fe-B magnets

• Anisotropic diffusion of heavy rare earth can be avoided for sintered Nd-Fe-B magnets. • The alloying of diffusion source distinctly enhance diffusion efficiency of Tb along a -axis. • The alloying of diffusion source inhibits the excessive lattice diffusion of Tb. Grain boundary diffusion (GBD) efficiency of heavy rare earths (HREs) for sintered Nd-Fe-B magnets along the easy magnetization direction ( c -axis) was reported to be higher than that along the difficult one ( a -axis). However, this conclusion is challenged by the present results, which indicate that the anisotropic diffusion does not exist, at least for some low-melting HRE-based diffusion sources. The alloying of Tb by Pr, Al and Cu can distinctly enhance the diffusion efficiency of Tb along the a -axis, resulting in quite similar coercivity enhancement to that diffused along the c -axis. The diffusion kinetic analysis and microstructure characterizations demonstrate that the alloying lowers the melting point of diffusion source and wets the intergranular phase as effective diffusion paths for Tb. This suppresses the excessive lattice diffusion of Tb and the formation of over-thick Tb-rich shells, which is beneficial to enhancing the Tb diffusion efficiency along the a -axis and reducing the total Tb consumption.

On the electronic and magnetic properties of RVO3 (R = Er, Ho, Y, Lu) vanadates: first principles study

In this paper, we investigate the influence of the rare earth element (R) on the physical properties of RVO3 (R = Er, Ho, Y, Lu). For this purpose, a theoretical work is reported in this study using ab initio method with the intent of enhancing our knowledge of the electronic, and magnetic properties of RVO3 (R = Er, Ho, Y, Lu) compounds. The electronic properties of these materials show the presence of Jahn-Teller effect, with a band gap of approximately 0.58eV, 1.57eV, 1.12eV, 1.28eV, for ErVO3, HoVO3, YVO3, LuVO3, respectively. The magnetic contribution of Ho, Er, and V atoms in HoVO3, and ErVO3 compounds was disentangled using X-ray magnetic circular dichroism (XMCD). The magnetic anisotropies of RVO3 with (R = Er, Ho, Y, Lu) are studied and analyzed using spin orbit coupling. We noticed an easy axis of magnetization along the c-direction with strong magneto-crystalline anisotropy energies for the non-magnetic rare earth elements (R = Lu, Y)VO3. For the magnetic rare earth elements, the easy and hard magnetization direction were found to be along b-axis and c-axis, and a-axis and c-axis for HoVO3, and ErVO3, respectively. This means that instead of the standard magnetization demagnetization process, large thermal effects can be obtained by spinning their single crystals in constant magnetic fields. The exchange coupling between (Ho–V) is also found to be greater than the other exchange interactions in HoVO3. Accordingly, a large conventional magnetocaloric could be created in HoVO3, since the Ho Ising moments experience a metamagnetic transition. However, the magnetocaloric effect (MCE) is expected to be lower in ErVO3 due to the weak (Er–V) exchange coupling.

Field‐Free Spin‐Orbit Torque Switching of Perpendicular Magnetization by Making Full Use of Spin Hall Effect

AbstractField‐free switching is a critical issue for spin‐orbit torque‐induced magnetic random‐access memory (SOT‐MRAM) with perpendicular magnetic anisotropic (PMA) towards application. If only the spin‐polarized electrons along the y‐direction (σy) are used, deterministic switching cannot be achieved, as the electron polarization direction and easy magnetization direction are orthogonal. In this work, z‐direction polarized electrons (σz) produced by the spin Hall effect are utilized to provide the switching direction and σy provides the propulsion of magnetic reorientation. With the cooperation of σy and σz by the spin Hall effect, field‐free switching is achieved. To combine with magnetic tunnel junction (MTJ), a model is proposed, in which heavy metals providing σz are deposited on MTJ with asymmetric writing line widths. This model retains the characteristics of read‐write separation and realizes deterministic switching based on SOT.

First principles calculations to investigate electronic, magnetic anisotropy energy and optical properties of MnCrP half-Heusler alloy

In this current research work, the electronic, magnetic and optical properties of half Heusler alloy MnCrP are calculated and discussed within DFT framework. These calculations are done by using Wien2k code with Perdew–Burke–Ernzerhof Generalized Gradient Approximation and Tran-Blaha modified Becke-Johnson (TB-mBJ) exchange and correlation potentials. Band gap study along with density of states analysis divulge the magnetic nature of MnCrP. The magnetic moments with PBE-GGA and TB-mBJ are 4.426μB and 4.4542μB respectively. It shows the suitability of this material in spintronic device fabrications. The magnetic anisotropy energy of this half Heusler is also determined by the difference of energies in easy and hard magnetization directions. Several optical parameters are calculated, including dielectric constants, absorption parameter, refractive indices, reflectivity, extinction coefficient, energy loss function and conductivity. The imaginary part of the dielectric constant also predicts that the compound MnCrP is optically metallic and suitable for sensor application and optoelectronic device.

Anisotropic magnetic property of single crystals RV6Sn6 (R=Y, Gd−Tm, Lu)

$R$V${_6}$Sn${_6}$ ($R$ = Y, Gd - Tm, Lu) single crystals are synthesized by Sn-flux method and their physical properties are characterized by magnetization, resistivity, and specific heat measurements. Powder X-ray diffraction patterns of all samples can be well indexed with the hexagonal HfFe$_6$Ge$_6$-type structure, where rare-earth atoms form hexagonal layers and vanadium atoms form Kagome layers. At high temperatures, magnetic susceptibility measurements of moment bearing rare-earths ($R$ = Gd - Tm) follow Curie-Weiss behavior. Effective moments estimated from the polycrystalline average of magnetic susceptibility curves are consistent with the values for free $R^{3+}$ ion. Strong magnetic anisotropy due to crystalline electric field effects is observed for moment bearing rare-earths, except GdV$_6$Sn$_6$. The easy magnetization direction is determined to be $c$-axis for $R$ = Tb - Ho and $ab$-plane for $R$ = Er, and Tm. The vanadium ions in $R$V${_6}$Sn${_6}$ possess no magnetic moment. The compounds for $R$ = Y and Lu exhibit typical characteristics of paramagnetic metals. At low temperatures, the magnetic ordering is confirmed from magnetization, specific heat, and resistivity: the highest $T_{N} = 4.9$~K for GdV$_6$Sn$_6$ and the lowest $T_{N} = 2.3$~K for HoV$_6$Sn$_6$. No magnetic ordering is observed down to 1.8~K for $R$ = Er and Tm. A slight deviation of the magnetic ordering temperature from the de Gennes scaling suggests the dominant Ruderman-Kittel-Kasuya-Yosida (RKKY) exchange interaction between rare-earth moments in metallic $R$V${_6}$Sn${_6}$ compounds.

Electrodeposition and magnetic properties of Co x Dy1−x nanotube arrays

Well-ordered Co x Dy1−x nanotubes are electrodeposited into self-made anodic aluminum oxidation templates under different potentials. The composition of Co x Dy1−x alloy nanotubes can be tuned by deposition potentials. The deposited Co x Dy1−x alloy nanotubes are amorphous, however, there appears a diffraction peak corresponding to Co7Dy2 in the sample annealed at 600 °C. The easy magnetization direction is always along the longitudinal axis of arrays for all samples. Dysprosium alloying significantly increases the coercivity of Co x Dy1−x nanotubes in comparison with Co nanotubes. By using the hybrid Monte Carlo micromagnetic method, the exchange stiffness constant of Co7Dy2 nanotubes can be conveniently estimated to be 8.0 × 10−11 J m−1.

Structure, magnetic anisotropy and magnetocaloric effect of Mn5Ge3-xSix single crystals

Magnetocaloric polycrystalline materials based on Mn5Ge3 have been widely studied due to their potential application for room temperature magnetic refrigeration. However, many investigations are performed on polycrystalline materials and thus the strong anisotropy in this layered structure is usually neglected. In this study, Mn5Ge3-xSix (x = 0, 0.7) single crystals were successfully synthesized via Sn flux and characterized by single-crystal X-ray diffraction and magnetic measurements. The Si substitution does not change the structural symmetry, but reduces the shortest Mn − Mn distances. As described by the Bethe-Slater curve, the reduction of the shortest Mn − Mn distances leads to weaker magnetic exchange, accounting for the lower ordering temperature. The magnetocrystalline anisotropy was evaluated by the Sucksmith and Thompson method, and became smaller upon substitution. The anisotropy constants K1 and K2 of Mn5Ge3-xSix (x = 0, 0.7) single crystals are positive, and decrease with the temperature. The electron paramagnetic resonance spectra suggest high spin d5 configuration of manganese in both crystals. The easy magnetization direction yields much larger maximum entropy changes in both crystals: 6.0 J/kg K for the pristine and 5.4 J/kg K for the substituted under an applied field of 30 kOe.

Magnetic Anisotropy of Individual Nanomagnets Embedded in Biological Systems Determined by Axi-asymmetric X-ray Transmission Microscopy.

Over the past few years, the use of nanomagnets in biomedical applications has increased. Among others, magnetic nanostructures can be used as diagnostic and therapeutic agents in cardiovascular diseases, to locally destroy cancer cells, to deliver drugs at specific positions, and to guide (and track) stem cells to damaged body locations in regenerative medicine and tissue engineering. All these applications rely on the magnetic properties of the nanomagnets which are mostly determined by their magnetic anisotropy. Despite its importance, the magnetic anisotropy of the individual magnetic nanostructures is unknown. Currently available magnetic sensitive microscopic methods are either limited in spatial resolution or in magnetic field strength or, more relevant, do not allow one to measure magnetic signals of nanomagnets embedded in biological systems. Hence, the use of nanomagnets in biomedical applications must rely on mean values obtained after averaging samples containing thousands of dissimilar entities. Here we present a hybrid experimental/theoretical method capable of working out the magnetic anisotropy constant and the magnetic easy axis of individual magnetic nanostructures embedded in biological systems. The method combines scanning transmission X-ray microscopy using an axi-asymmetric magnetic field with theoretical simulations based on the Stoner-Wohlfarth model. The validity of the method is demonstrated by determining the magnetic anisotropy constant and magnetic easy axis direction of 15 intracellular magnetite nanoparticles (50 nm in size) biosynthesized inside a magnetotactic bacterium.

Anisotropy of the Magnetic Properties of Er³⁺ Ion in Erbium Iron Garnet Crystal at Low Temperature

With the consideration of crystal field (CF) and exchange interaction between the magnetic ions, we conduct a theoretical analysis to the anisotropy of the magnetization caused by Er^3+ ions in erbium iron garnet (ErIG) in the temperature range from 4.2 to 150 K. It is found that the anisotropy of the magnetization caused by Er^3+ ions originates mainly from the anisotropic Er^3+–Fe^3+ ion exchange interaction. In the course of research, a set of relatively suitable CF parameters are obtained by analyzing the influence of different CF parameters on the magnetization. The secular equation is solved by quantum theory after taking into account the coupling of the ⁴I_15/2 and ⁴I_13/2 multiplets, and the energy levels and wave functions of Er^3+ ions are further obtained. Then, the magnetization of Er^3+ ions at six inequivalent sublattices when magnetized along the [100], [110], and [111] directions are calculated, respectively. Following this, comparisons between the average value of the so-obtained six quantities and the experimental data are made in the [100], [110], and [111] magnetization directions. The calculated results coincide well with the experimental data and [100] is the easy magnetization direction.

Giant widening of interface magnetic layer in almost compensated iron garnet

A two-sublattice ferrimagnet undergoes a transition from a collinear to the canted magnetic phase at magnetic field oriented along an easy magnetization direction. In this work, we study the transition by means of the magneto-optical Faraday effect in a thin film of compensated iron garnet (Lu3−xBix)(Fe5−y−zGayAlz)O12 grown on the Gd3Ga5O12 substrate. In the immediate vicinity of the compensation temperature, a precursor of the transition with a complex shape was observed. Using a special sample with variable thickness, we demonstrate an interfacial origin of the precursor. Diffusion of gadolinium from the substrate into the film forms a thin intermixed layer with enhanced magnetization. It induces an extended inhomogeneous magnetic structure in the film. A two-step shape of the precursor appears due to an easy-plane anisotropy of the intermixed magnetic layer. We emphasize that an effective width of the inhomogeneous magnetization distribution in the film grows enormously while approaching the compensation temperature.

Energy conversion in Ni-Mn-Ga with asymmetrical bias magnetic field

We studied the mechano-electric energy conversion for Ni-Mn-Ga alloys with dynamic experiments under a bias magnetic field. At low and at high magnetic fields, the magneto-crystalline anisotropy energy and the Zeeman energy dominate the formation of magnetic domains, respectively. At lower fields and when the bias field is tilted against the twin boundary, the formation of 180° magnetic domains reduces the net magnetization parallel to the load axis. However, at low strains and in a compressed state and when the bias field is tilted along the twin boundary, the majority of the volume saturates parallel to the load axis. Further, the evolution of the magnetic domains with increasing the magnetic field is different in each twin domain; a lower magnetic field is needed to eliminate magnetic domain boundaries in the twin domain with the direction of easy magnetization closely aligned with the field than in the twin domain with the direction of easy magnetization at a large angle to the field. Therefore, due to increased net magnetization parallel to the load axis, the magnetic structure generated at lower bias fields tilted parallel to the twin boundary is more favorable to maximize power conversion. However, a minimum bias field is required to expand the sample against the axial load and this field must be higher than the switching field. Therefore, in order to optimize electric power output, the energy conversion has to take place at lower bias magnetic fields and on samples with low twinning stress with the field direction inclined nearly parallel to the twin boundaries.

Element-selective analysis of ultrafast demagnetization in Co/Pt multilayers exhibiting large perpendicular magnetic anisotropy

We use time-resolved resonant magnetic scattering experiments to investigate the laser induced demagnetization of Co/Pt multilayers with large perpendicular magnetic anisotropy. Our pump-probe approach, which relies on extreme ultraviolet pulses obtained via high-harmonic generation, allows us to monitor the temporal evolution of the system in an element-selective fashion, thus to disentangle the contributions from permanent and proximity-induced magnetic moments. By analyzing the data gathered at the Co M2,3 and Pt O3 edges, we are able to show that after femtosecond laser irradiation, both components display a very similar loss of magnetic order, with almost identical demagnetization amplitudes and characteristic times, but a small delay (10–20 fs) of the Pt magnetization quenching with respect to Co. Comparing our experiments with literature results, therefore, suggests that in these 3d–5d multilayers and alloys, the different constituents remain strongly coupled after optical excitation; no matter whether the thin films possess a preferred in-plane or out-of-plane easy magnetization direction.

Electronic and magnetic properties of [formula omitted], Janus [formula omitted] and [formula omitted] nanosheets: First-principles investigation

Motivated by the experimental success of RuSe2 (Angew. Chem. Int. Ed. 60 2021) and 1T−CrTe2 (Nat. Commun 809 2021) sheets for hydrogen production and room-temperature ferromagnetism respectively, we investigate the effects of external factors, atomic substitutional doping and chemical functionalization on the ground state properties of RuTe2 sheet. By using density functional theory (DFT) and DFT+ Hubbard U, we found that the RuTe2 and RuSTe sheets exhibit nonmagnetic semiconducting property whereas Mn−RuTe2 sheet is a ferromagnetic metal with good stability. The obtained band-gap for RuTe2, and RuSTe sheets reduce in DFT+U approach, as compared with DFT calculations. The band-gap of RuTe2 sheet can be further tuned under applied mechanical strain. It is noted that the Janus RuSTe sheet improves the carrier mobility as compared with that of RuTe2 sheet. It is revealed that the semiconductor to metal transition occurred for RuTe2 sheet at 8 V/nm. In addition, the semiconducting property of pure RuTe2 is modulated into half-metallic (HM) for Li−RuTe2 and metallic for Na/K−RuTe2 structures. Antiferromagnetic (AFM) and ferromagnetic (FM) is the ground state for Li/K−RuTe2 and Na−RuTe2 structures, respectively. For further investigations, we find that Mn doped RuTe2 (Mn−RuTe2) show the ferromagnetic property. The Mn−RuTe2 sheet prefers in-plane as the easy axis magnetization direction based on the calculated magnetic anisotropy energies (MAE). The results demonstrate the potentials of RuTe2, RuSTe and Mn−RuTe2 sheets for optoelectronics, sensing, and spintronics device applications.

Temperature-dependent out-of-plane anisotropy in compressively strained La0.67Sr0.33MnO3 thin films

We studied the temperature and strain dependence of the perpendicular magnetic anisotropy in La0.67Sr0.33MnO3 thin films by performing temperature- and angle-dependent magnetotransport measurements. Three films of similar thickness (14 u.c., 14 u.c. and 15 u.c.) but with different out-of-plane crystallographic strain (1.9%, 0.9% and -0.7%) are studied. The films are grown on LaAlO3 and SrTiO3 substrates by pulsed laser deposition. We observe a clear increase in the out-of-plane magnetic anisotropy with increasing out-of-plane strain in the angle-dependent magnetotransport measurements which is present up to 80 K for the highest (1.9%) strained sample. The deformation of the unit cell, as discussed in earlier reports, point to the magnetocrystalline anisotropy as the main driver altering the magnetic easy axis direction. Our results highlight the utility of the effective magnetocrystalline anisotropy as a tool to control the desired anisotropy in crystalline thin films of La0.67Sr0.33MnO3.

Regulating the recrystallized grain to induce strong cube texture in oriented silicon steel

• Cube texture contains two easy magnetization direction 〈001〉 parallel to rolling and transverse direction respectively, which is the most ideal magnetic texture suitable not only for transformers but also for rotating machines. In this study, strong cube texture with ODF density of 50.73 mrd was successfully obtained by controlling orientation using pulsed electric current in finished oriented silicon steel. • To transform from Goss to cube texture in oriented silicon steel, cross cold rolling process intentionally “created” metastable deformed cube orientation in oriented silicon steel. • The effects of Joule heating and heating rate on the cube recrystallization texture were distinguished, which fills a significant gap in our knowledge of the mechanism of pulse electric current induced texture transformation. • This idea of current-controlled texture is worthy of popularization in more materials and the realization of electromagnetic field to crystal orientation selection is an interesting topic. Cube texture contains two easy magnetization directions 〈001〉 parallel to rolling and transverse direction, respectively, which is the most ideal magnetic texture suitable not only for transformers but also for rotating machines. In this study, a strong cube texture with ODF density of 50.73 mrd was successfully obtained by regulating the recrystallized grain orientation using cross-rolling and pulsed electric current, compared to conventional thermal annealing (the average cube texture intensity is ~10 mrd in lots of latest studies). Cross cold rolling process intentionally “created” metastable deformed cube orientation in oriented silicon steel and the specific recrystallization texture rotation path was identified under pulsed electric current in 5 min: {114}<261>→{114}<151>→{114}<041>→{001}<150>→{001}<010>. The cube-oriented grains were induced by pulsed electric current (800 °C) and rapid heating (51.9 °C/s, 750 °C), while the cube grains were observed in the annealed samples at the high temperature (1060 °C). Recrystallized grain size of pulsed samples is about twice that of the annealed sample. This phenomenon is considered that the concurrent effects of electron wind force and Joule heating affected the nucleation, growth and rotation of cube grains by reducing the nuclear barrier, producing higher grain boundary mobility and structural evolution towards a state with lower electrical resistance. This idea of current-controlled texture is worthy of popularization in more materials and the realization of an electromagnetic field to crystal orientation selection is an interesting topic.

2D high temperature ferromagnetic Co2Ti2Sn2 monolayer with tunable magnetic anisotropy and superior mechanical flexibility: A first-principles and Monte Carlo study

A novel type of two-dimensional (2D) alloy Co2Ti2Sn2 with intrinsic ferromagnetism have been predicted using first-principles calculations. The results show that Co2Ti2Sn2 monolayer exhibits a considerably large magnetic anisotropic energy (MAE) of 533 μeV per Co2Ti2Sn2 formula and the MAE can be tuned by carrier doping. For the electron doping, the MAE increases monotonically and significantly enhances ~60% up to 866 μeV, while for the hole doping, MAE decreases from positive to negative at the critical point of - 4 × 1014 cm−2, corresponding to the change of easy magnetization direction from out-of-plane to in-plane. In addition, Monte Carlo simulations based on classical Heisenberg model estimate a high Curie temperature of approximate 463 K. Besides, we show that the Co2Ti2Sn2 monolayer possesses good mechanical flexibility and can withstand a strain ranging from −32% to 22% and −15%–10% under uniaxial and biaxial direction, respectively. With the uniaxial stretching strain up to 12.4%, a magnetic phase transition will occur, during which the magnetic moment jumps to zero accompanied by energy jumping. Similar phenomenon is also observed at −6.5% and −8.8% under biaxial and uniaxial compression, respectively. These explored controllable magnetic properties, electronic properties, superior mechanical flexibility and the high Curie temperature render the 2D Co2Ti2Sn2 monolayer a promising candidate for applications in magnetic logic device and nanospintronic applications.